 /*******************************************************************************
  * Copyright (c) 2000, 2005 IBM Corporation and others.
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
  * which accompanies this distribution, and is available at
  * http://www.eclipse.org/legal/epl-v10.html
  *
  * Contributors:
  * IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.core.internal.events;

 import java.util.*;
 import org.eclipse.core.internal.resources.*;
 import org.eclipse.core.resources.*;

 public class ResourceChangeEvent extends EventObject implements IResourceChangeEvent {

     private static final IMarkerDelta[] NO_MARKER_DELTAS = new IMarkerDelta[0];
     private static final long serialVersionUID = 1L;
     IResourceDelta delta;
     IResource resource;

     /**
      * The build trigger for this event, or 0 if not applicable.
      */
     private int trigger = 0;
     int type;

     protected ResourceChangeEvent(Object source, int type, IResource resource) {
         super(source);
         this.resource = resource;
         this.type = type;
     }

     public ResourceChangeEvent(Object source, int type, int buildKind, IResourceDelta delta) {
         super(source);
         this.delta = delta;
         this.trigger = buildKind;
         this.type = type;
     }

     /**
      * @see IResourceChangeEvent#findMarkerDeltas(String, boolean)
      */
     public IMarkerDelta[] findMarkerDeltas(String findType, boolean includeSubtypes) {
         if (delta == null)
             return NO_MARKER_DELTAS;
         ResourceDeltaInfo info = ((ResourceDelta) delta).getDeltaInfo();
         if (info == null)
             return NO_MARKER_DELTAS;
         //Map of IPath -> MarkerSet containing MarkerDelta objects
 Map markerDeltas = info.getMarkerDeltas();
         if (markerDeltas == null || markerDeltas.size() == 0)
             return NO_MARKER_DELTAS;
         ArrayList matching = new ArrayList();
         Iterator deltaSets = markerDeltas.values().iterator();
         while (deltaSets.hasNext()) {
             MarkerSet deltas = (MarkerSet) deltaSets.next();
             IMarkerSetElement[] elements = deltas.elements();
             for (int i = 0; i < elements.length; i++) {
                 MarkerDelta markerDelta = (MarkerDelta) elements[i];
                 //our inclusion test depends on whether we are considering subtypes
 if (findType == null || (includeSubtypes ? markerDelta.isSubtypeOf(findType) : markerDelta.getType().equals(findType)))
                     matching.add(markerDelta);
             }
         }
         return (IMarkerDelta[]) matching.toArray(new IMarkerDelta[matching.size()]);
     }

     /**
      * @see IResourceChangeEvent#getBuildKind()
      */
     public int getBuildKind() {
         return trigger;
     }

     /**
      * @see IResourceChangeEvent#getDelta()
      */
     public IResourceDelta getDelta() {
         return delta;
     }

     /**
      * @see IResourceChangeEvent#getResource()
      */
     public IResource getResource() {
         return resource;
     }

     /**
      * @see IResourceChangeEvent#getType()
      */
     public int getType() {
         return type;
     }

     public void setDelta(IResourceDelta value) {
         delta = value;
     }
 }

